Decongestants

Decongestants cause local vasoconstriction, thereby reducing blood flow to the mucous membranes of the nasal passages and sinus cavities. Nasal decongestants (sympathomimetic amines) stimulate the alpha-adrenergic receptors, producing vascular constriction of the capillaries within the nasal mucosa. Decongestants are usually adrenergic or sympathomimetic.

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